Composition of matter.



No Drawing.

UNITED, STATES PATENT (OFFICE;

FRANCIS J. CQNBOY, or AUBURN, NEW YORK.

COMPOSITION MATTER.

To all whom it may concern:

Be it known that I, FRANCIS J. Connor, of Auburn, in the county ofCayuga, in the State of New York, have invented new and usefulImprovements in Composition of Matter, of which the following, taken incon-- nection with the accompanying drawings, is a full, clear, andexact description.

This invention relates to certain improvements in a new composition ofmatter which is particularly adapted as an economical Substitute forhard rubber and is capable of practically all uses to which such rubberis applied, such for example as electrical insulation, partsof gunstocks, mouth and ear pieces for telephones, speaking tubes and thelike, and for any other articles of manufacture which may be made ofrubber.

My object is to produce a composition having the color, hardness,insulating properties and othercharacteristics of rubber, at a verysmall percentage of the cost of such rubber and to enable suchcomposition to be used in all relations and associations where hardrubber may be employed.

Another object is to enable such composition to be manufactured ormolded in a smooth, glossy and finished condition in a single operationwithout subsequent polishing or finishing.

The invention broadly consists in mixing together a comminuted body ofincombustible material together with a viscous substance which readilysets to a high degree of hardness upon cooling, using a suitable'ciliary or fibrous bond and a non-viscous substance which arethoroughly incorporatd in the mixture, the bond serving to increase thetensile strength of the molded bodywhile the non-viscous substanceprevents adhesion ofthe plastic body to the sides of the mold or dieswhile such body is being formed.

The ingredients I and proportions employed in'the manufacture of thecomposition are preferably as follows; 30 lbs. of.

Specification of Letters Patent. Patented Nov. 16, 1909.

Application flletl November 28, 1908. Serial No. 464,818.

comminuted or pulverized mineral asbestos. 30 lbs. of tar or pitch, 4lbs. of cotton or similar fibrous ingredient and one-half pound ofcarnauba or equivalent wax, all of which ingredients are thoroughlymixed and incorporated into a plastic body thereby .termed the body ofthe composition while the tar'or pitch serves to cohesively bind the('omminuted particles of asbestos together. gredi ent serves as a bondto bind the mixture of tar and asbestos together to reduce its fragilityand increase its tensile strength while the wax prevents the adhesion ofthe composition to the sides of the mold or die during the formation ofthe article and at the same time gives a finished, glossy appearance tothe surface of said article under pressure of the dies without furthertreatment, said molded article being allowedito cool or set in the moldafter which it may be removed and used for the purposefor which it isintended. \Vhat I claim is:

A composition of matter comprising the following ingredients in theproportions named: 30 pounds of asbestos, 30 pounds The cotton or otherfibrfous inof tar or pitch, four pounds of cotton or equivalent fibroussubstance and one-half pound of carnauba or equivalent wax, thor-

